Finding the Third Proportional to 217,964.50 and 461,858

Step by Step Solution

1. Step 1: Write the proportion equation
   217,964.50 : 461,858 = 461,858 : x
2. Step 2: Convert to fraction form
   217,964.50/461,858 = 461,858/x
3. Step 3: Cross multiply
   217,964.50x = 461,858 × 461,858
4. Step 4: Simplify right side
   217,964.50x = 213,312,812,164
5. Step 5: Solve for x
   x = 213,312,812,164/217,964.50
6. Step 6: Final answer
   x = 978,658.51